Malicious PDF — malware analysis report

Static analysis result for SHA-256 14062a48e3460489…

MALICIOUS

PDF

79.0 KB Created: 2021-04-07 14:41:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: d5571f4e0e523a86352f662cb4fdb46e SHA-1: 3fa0a2b690877d6ace51078484dd5b929ca7e00d SHA-256: 14062a48e3460489d40349360552dd5c471941ca143931cef7271b306efffa7f
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a significant number of external links, identified as a link farm, with one prominent URL pointing to a suspicious domain. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. Although no scripts were extracted, the PDF structure and embedded URIs suggest an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://pelibifir.ru/strik?utm_term=how+to+wash+wahl+clippers PDF link annotation
    • http://sabawosekedap.22web.org/31952610327.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/rufonali/wimpy_kid_book_characters.pdfIn PDF document text
    • https://1c8fadd7-09eb-4d2b-9d42-8e747ba5ce52.filesusr.com/ugd/60625b_d9f4670d146e4e3b843085584ed10e86.pdf?index=trueIn PDF document text
    • http://gaxilitexu.onlinewebshop.net/giwetef.pdfIn PDF document text
    • https://dedb376b-efc3-4528-ac10-fc65d12f866c.filesusr.com/ugd/5f6074_9d2aba4ac351463ba41c1998b93455fb.pdf?index=trueIn PDF document text
    • https://70fbc5f3-53e4-4072-9ff7-a5862d19847b.filesusr.com/ugd/bb3bf9_e1b9e9f86895477cb2957943770dde8f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/dibedamoka/tamorapi.pdfIn PDF document text
    • http://samesesodore.onlinewebshop.net/medicina_regenerativa._clulas_madre_embrionarias_y_adultas.pdfIn PDF document text
    • https://63c5840e-267c-49ed-94d3-fc9f9d8b9c0b.filesusr.com/ugd/8c5bc8_73f0bf8fb50f4851899945374319fc8e.pdf?index=trueIn PDF document text
    • https://bc732cde-fb09-4fee-8ab5-c82a45a1131b.filesusr.com/ugd/2ac701_53799d3d874346359f4e3b1f286a767d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kufazete/glitter_wallpaper_full_hd.pdfIn PDF document text
    • http://gaxufaxurawago.epizy.com/27986725799.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18a6d273-7323-4174-90a3-b4d782a5b1b0/how_long_to_cook_a_6_pound_prime_rib_on_a_rotisserie.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86746051-0861-4b5e-b72a-d94431e148e0/kirenoguz.pdfIn PDF document text
    • http://pawepefefuluku.epizy.com/guia_alimentar_como_ter_uma_alimentao_saudvel.pdfIn PDF document text
    • http://bitines.myartsonline.com/26206216146.pdfIn PDF document text
    • http://favepos.rf.gd/kapeke.pdfIn PDF document text
    • https://7b4e975e-109f-4397-a679-93e438ff1453.filesusr.com/ugd/c33f71_6c450c4421404e04a4f0982ef8aedddf.pdf?index=trueIn PDF document text
    • http://nabinoxifod.epizy.com/wovebisowim.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f992.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF992 5076 bytes
SHA-256: de17f5b1a149029bbdceb7e103bbf4b3335ef7d758411a35aaed4cba817bd60a
font_01_sfnt_off00010add.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10ADD 11192 bytes
SHA-256: 0914e52f955421ea2afa75c5c2e6ed4236084db265e42920a5201e3baeaa69ad

Open this report in the interactive analyzer, or submit your own file for analysis.